CI enables us to define our own configurations and easily access them via the config class. For example, with application/config/my_config.php, let's say we define a parameter in that config file as follows:

$param1 = "value1";

We can easily access our configuration file parameters to load all the parameters into the array:

$array = $this->config->load('my_config', TRUE);

The second parameter, TRUE, assures us that our configuration parameters will be defined in an array prefixed with the configuration file name.

Consider: $param1 = $array['my_config']['param1'];

or: $param1 = $this->config->item('param1', 'my_config'),.

$param1 will have the value value1 that we have set in the configuration file that we built.